CPlane Z lock

Does anyone know if there’s a way to lock the z axis while making custom cplanes? Every time I change using 3point I also get a tiny change in the z axis along with the X and Y which throws any line drawing out. I thought this might be a tolerance thing but changing from 0.1 to 0.001 seems to make no difference

Hello - if you are setting a Cplane by three points and snapping to points in 3d, turning on Project on the osnaps will force all the snaps to the Cplane and the resulting plane will be parallel to the starting cplane… is that what you need? If the new Cplane needs to be off of the current one, do not Project for the first (origin) point and keep the ‘Planar’ setting in the status bar on.
Not sure if any of that gets at what you are after.


The Project fix is just what I was looking for, thank you for all the help on this